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The Siemens SIRIUS 3RW4047-1BB15 is a high-performance soft starter from the SIRIUS 3RW40 series, engineered for efficient and gentle motor starting and stopping. Designed for three-phase asynchronous motors, it provides smooth acceleration and deceleration, minimizing mechanical stress and electrical disturbances.
This model features an integrated bypass contact system for reduced heat dissipation and compact installation, along with two-phase control and electronic overload protection to ensure optimal motor protection. Supporting an operating voltage range of 400–600 V AC and control supply of 110–230 V AC/DC, it delivers reliable performance up to 106 A and 75 kW at 500 V.
Ideal for industrial applications such as pumps, fans, compressors, and conveyors, the 3RW4047-1BB15 offers dependable motor management in a compact, durable housing with screw terminal connections for easy installation.
| Specification | Details |
|---|---|
| Range of Product | SIRIUS 3RW40 Soft Starter |
| Product or Component Type | Soft Starter with Integrated Bypass |
| Device Short Name | 3RW4047-1BB15 |
| Size | S3 |
| Applications | Smooth motor start/stop for pumps, fans, compressors, conveyors, and general industrial machinery |
| Utilization Category | AC-53A (for squirrel-cage motors) |
| [Ue] Rated Operational Voltage | 400–600 V AC |
| [Ie] Rated Operational Current | 106 A |
| Rated Motor Power | 75 kW (at 500 V) |
| Control Supply Voltage | 110–230 V AC/DC |
| Control Type | Two-phase control |
| Integrated Bypass | Yes |
| Overload Protection | Built-in electronic overload protection |
| Connection Type | Screw terminals |
| Ambient Temperature (operational) | Up to 40 °C (rated) |
| Dimensions (L x W x H) | 219 × 184 × 91 mm |
| Net Weight | 1.852 kg |
| Product Lifecycle | Active |
| Product Class | A (Standard stock item, returnable within guidelines) |